Use your computer as a cosmic ray detector! One of the memory errors Rust does not protect against.

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Command-line rust cosmic-rays
Overview

Your computer can double up as a cosmic ray detector. Yes, really!

Cosmic rays hit your computer all the time. If they hit the RAM, this can sometimes cause disturbances, like flipping a random bit in memory. To use your computer as a cosmic ray detector, simply run this program!
The detection works by allocating a vector of zeroed bytes and then checking regularly to see if they are all still zero. Ta-da!

  • Do not run this on a computer with ECC memory, as that will prevent the data corruption we are trying to detect!
  • The chance of detection increases with the physical size of your DRAM modules and the percentage of them you allocate to this program.
  • Beware of operating systems being clever, and e.g. compressing unused memory pages or swapping them to disk. A vector of nothing but zeros that hasn't been used in a while is an excellent target for this. This will shrink your detector!
  • Expect detections to be very rare.

Special thanks to

  • /u/csdt0 and /u/HeroicKatora on reddit for ideas about how to improve the correctness of the program and avoid the pitfalls of virtual memory.
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Comments
  • update readme

    update readme

    I don't like the word issue because it is derogative. Disturbances is more accurate and corruptions is what this is specifically trying to detect. I also linked a wikipedia page on EEC.

    opened by moritz-t-w 2
  • Replace long if-else statements with pattern matching

    Replace long if-else statements with pattern matching

    I believe that this makes the code look more clean than before.

    This PR is basically just refactoring. From what I've seen, in Rust, when checking against literals, match statements are generally preferred over if-else

    opened by Oakchris1955 1
Releases(v5.0.0)
Owner
Johanna Sörngård
Currently PhDing at the physics department at Stockholm University. Enjoys collecting cool rocks, and also other cool things that are not rocks.
Johanna Sörngård
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